Desk-lock.



No. 688,052. Patented nee; 3,;l90l.

H. n. ALLEN.

DESK LOCK.

(Application filed June 17, 1901.) um Model.)

llil I 13 UNTTED STATES PATENT OFFICE.

HOWVARD D. ALLEN, OF TERRYVILLE, CONNECTICUT, ASSIGNOR TO EAGLE LOCK00., OF TERRYVILLE, CONNECTICUT, A CORPORATION.

DESK-LOCK.

SPECIFICATION forming part of Letters Patent No. 688,052, dated December3, 1901.

Application filed June 17, 1901.

To all whom it may concern.-

Be it known that I, HOWARD D, ALLEN, of Terryville, in the county ofLitchfield and State of Connecticut, have in vented a new and usefulImprovement in Desk-Locks; and I do hereby declare the following, whentaken in connection with the accompanying drawings and the numerals ofreference marked thereon, to be a full, clear, and exact description ofthe same, and which said drawings constitute part of this specification,and represent, in-

Figure 1, a viewin front elevation of a lock constructed in accordancewith my invention; Fig. 2, a view showing the application of the lock toa desk, which is shown in section; Fig. 8, abroken view,in verticalsection, showing the application of the detachable cylinder 0r key-guideto the lock-case; Fig. 4, a detached view, in side elevation, showingthe detachable cylinder or key-guide and its retaining-nut.

My invention relates to an improvement in that class of desk-locksprovided with detachable cylinders or key-guides, the object being toproduce a lock of thischaracter which shall at once be extremely simpleand durable in construction and convenient to apply without marring thedesk.

With these ends in view my invention consists in a desk-lock havingcertain details of construction, as will be hereinafter described, andpointed out in the claims.

In carrying out my invention I provide the lock with a detachablecylinder or key-guide comprisinga circularhead 2, a hub 3, a shank 4,and a threaded stem 5, which forms its inner end, the said head, hub,shank, and threaded stem being formed with a longitudinally-arrangedkeyrslot 6 and the said head being provided with an annular cap 7. Thesaid shank 4. corresponds in length to the thickness of the lock-case 8and its cover 9, the said cover being formed with a circular opening 10and the case with a corresponding opening 11, registering with theopening 10. A nut 12, formed with a slot 13, is adapted to be applied tothe threaded stem 5.

In applying my improved lock the desk 14. is provided with a mortise 15for the reception of the lock and with two registering holes 16 and 17for the reception of the hub 3 of Serial No. 64,776. (No model.)

the cylinder or key-guide and the nut 12. After the lock has beenintroduced into the mortise 15 the cylinder or key-guide is insertedthrough the hole 16 and pushed inward 5 5 until its head 2 rests againstthe outer surface of the case, at which time the hub 3 will occupy thehole 16 and the shank 4: extend through the lock-case with the threadedstem 5 projecting into the hole 17. The nut 12 is now inserted into thehole 17 and applied to and screwed over the stem forming the inner endof the cylinder or key-guide until it is brought to a bearing upon theouter face or back of the lock-case, as shown in Fig. 3. When the lockis thus assembled, the shoulder between the hub and shank willpreferably bear against the cover of the case, while the inner end ofthe nutwill bear against the shoulder between the shank and threadedstem. To remove the lock, it is only necessary to apply a screw-driverto the nut and remove it from the threaded stem of the cylinder orkeyguide,'whicl1 may then be pulled away from the lock-case, after whichthe same may be lifted out of its mortise.

My improved desk-lock, having a detachable key-guide or cylinder, isextremely sim= ple and durable in construction and every way easy andconvenient to apply and remove.

It is apparent that in carrying out my invention some changes may bemade from the construction herein shown and described, and I wouldtherefore have it understood that I do not limit myself to the precisedetails shown, but hold myself at liberty to make such changes andalterations as fairly fall within the spirit and scope of my invention;

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a desk-lock, the combination with the lock-case, of a detachablecylinder or key guide extending from front to back through the case withwhich it engages to prevent it from longitudinal movement inward, andretaining means applied and attached to the inner end of the saidcylinder or key-guide and bearing against the outer face or back of thecase, whereby the said cylinder or keyguide is held against longitudinalmovement outward. I

2. In a desk-lock, the combination with the lock proper, of a cylinderor key-guide comprising a head, a hub, a shank, and a threaded stemadapted to be passed through the case, and a nut for application to theprojecting threaded stem, whereby the cylinder or keyguide is held inplace.

' 3. In a desk-lock, the combination with the case and cover thereof,the said parts being formed with corresponding openings, of a cylinderor key-guide comprising a circular head, a hub, a shank, and a threadedstem, the shank of said cylinder or head being adapted-to pass throughthe said openings, at which time the hub and head will be on one side ofthe lock-case and the threaded stem on the other side thereof, and a nutadapted to be applied to the said threaded stem for holding the cylinderin place in one direction While it is held in place in the oppositedirection by the shoulder formed between the said hub and stem.

In testimony whereof I have signed this specification in the presence oftwo subscribing Witnesses.

HOWARD D. ALLEN.

l/Vitnesses:

R. J. PLUMB, OTIS B. HOUGH.

